47549923 has 4 divisors (see below), whose sum is σ = 47869200. Its totient is φ = 47230648.

The previous prime is 47549911. The next prime is 47549933. The reversal of 47549923 is 32994574.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47549923 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47549923.

It is not an unprimeable number, because it can be changed into a prime (47549903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159415 + ... + 159712.

It is an arithmetic number, because the mean of its divisors is an integer number (11967300).

Almost surely, 2^47549923 is an apocalyptic number.

47549923 is a deficient number, since it is larger than the sum of its proper divisors (319277).

47549923 is a wasteful number, since it uses less digits than its factorization.

47549923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319276.

The product of its digits is 272160, while the sum is 43.

The square root of 47549923 is about 6895.6452199921. The cubic root of 47549923 is about 362.2846549760.

The spelling of 47549923 in words is "forty-seven million, five hundred forty-nine thousand, nine hundred twenty-three".